Engineering Design: Hermit Crabs

What is a reason an animal might use camoflauge?

• to hunt prey

• to build a nest

• to attract mates

• to communicate

How do hermit crabs decorate their shells?

• They chose colorful shells.

• They paint with squid ink.

• They carry sea anenomes.

• They attach colorful rocks.

What is a symbiotic relationship?

• Both animals benefit.

• Only one animal benefits.

• One animal eats the other.

• One animal raises the young.

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What is photosynthesis?

• How animals make food.

• How plants make food.

• How animals build shelter.

• How predators attach prey.

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Which physical structure helps hermit crabs gather food?

• claws

• eye stalks

• antennae

• mouthparts

What type of animals are hermit crabs?

• carnivores

• predators

• producers

• scavengers

Which scientist studies crustaceans?

• carcinologist

• entomologist

• hippologist

• ornithologist

How do scientists know what the ancient crab looked like?

• They found a fossil.

• They saw a pictures.

• They read ancient records.

• They discovered a live specimen.

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What is one feature that identifies the new crab as an active swimmer?

• a hard shell

• two sets of gills

• a pair of claws

• paddle-like legs

Why might some plastics not make a good shell for hermit crabs?

• They are too soft.

• They fall off easily.

• They are too colorful.

• They attract predators.

Tags

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